Improvement in smoke-flues and heating-drums



L. T. HUUGHTON. imoke-Flue and Heatingflrum.

No.166,461, Patented Aug.10,1875.

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desired.

LEWIS T. HOUGHTON, OF WORCESTER, MASSACHUSETTS.

IMPROVEMENT IN SMOKE-FLUES AND HEATING-DRUMS.

Specification forming part of Letters Patent No. l66,46l, dated August10, 1875; a li ation filed April 5, 1875.

To all whom it may concern Be it known that I, LEWIS T. HOUGHTON, ofWorcester, county of Worcester, State of Massachusetts, have invented aSmoke-Flue for Saving Heat, of which the following is a specificationThe object of my'invention is to save heat, cause better ventilation,and a uniform temperature.- I

Figure 1 represents an ordinary stove, with vertical section ofsmoke-flue A attached to said stove, with an inside hot-air pipe, B,connected with the outer and interior air, the dampers D and Eregulating the same, as 0, Figs. 1 and 2, show projections of metal onthe pipe B on the inner and outer sides of the said pipe B, to break upthe currents of air and to collect and discharge the heat that isescaping with the smoke and gas. By opening the dampers E the air isadmitted from outdoors to the pipe B, and through B into the room, orwherever it is desirable to discharge the same. The deflectors orprojections 0 0, Figs. 1 and 2, extending into the V smoke-flue A,causes the heat from the pro ducts of combustion to be thrown againstthe sides of pipe B, said heat being taken up by the ascending currentof air in pipe B. When the damper E is closed and the damper D isopened, the cold air at the bottom of the room is conveyed through thepipe B in like manner as when air is introduced from outside, therebysaving heat and causing a perfect ventilation with warm, fresh air, anda more uniform temperature. Y r

I therefore claim as my invention Witnesses:

O. F. MANN, B.'W. POTTER.

